The Mariposa might have opened in 1935. The California Index has a card citing a July 13, 1935, item in Motion Picture Herald saying that Frank Boeck and Ray Harper had opened a theater in Mariposa. I can’t find Mariposa mentioned in Boxoffice at all.

I met a gentleman in Mariposa this week who told me that as a high school student he was the last projectionist at the Mariposa Theatre before it closed. He wasn’t sure of the exact closing date but thought it was in the early 1960’s shortly after he graduated from high school. He said the theatre was located in the still standing structure at 5041 Highway 140 (Charles Street in the old days) between 6th Street and 7th Street which now houses a gym. A walking tour map of the city from the local History Society seems to confirm this location.